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    • 4. 发明授权
    • Systems for optically inspecting cylindrical surfaces
    • 用于光学检查圆柱面的系统
    • US5432600A
    • 1995-07-11
    • US218041
    • 1994-03-24
    • Gary GrollimundH. Cary Longest, Jr.Barry S. Smith
    • Gary GrollimundH. Cary Longest, Jr.Barry S. Smith
    • A24C5/34B07C5/342G01N21/952G01N21/88
    • G01N21/952A24C5/3412B07C5/3422B07C5/365G01N2021/8887G01N2201/102
    • The entire cylindrical surface of a cylindrical object such as a cigarette is optically inspected by first inspecting at least 180.degree. of the circumference of a first side of the surface, and then inspecting at least 180.degree. of the circumference of the other side. Each of the inspection stations illuminates more than 180.degree. of the circumference and images the surface from two angularly spaced directions to ensure that at least 180.degree. of the circumference is seen at each station. Any object having a defective image is automatically rejected from the apparatus, and the images and other statistical information regarding the performance of the system are displayed by the system. The images are formed in such a way as to greatly increase the speed at which the inspection system operates so that it can keep up with the very high rates at which objects such as cigarettes are made in modern machinery (e.g., approximately 10,000 cigarettes per minute). The images are analyzed using techniques which make possible the detection of very small defects and also compensate for possible nonuniform illumination of the objects in the circumferential direction.
    • 通过首先检查表面的第一侧的圆周的至少180°,然后检查另一侧的至少180°的圆周,对诸如香烟的圆柱形物体的整个圆柱形表面进行光学检查。 每个检查站照亮超过180°的圆周,并从两个角度间隔的方向对表面进行成像,以确保在每个站点看到至少180°的圆周。 具有缺陷图像的任何物体被自动地从装置中拒绝,并且关于系统性能的图像和其他统计信息由系统显示。 图像的形成方式大大增加了检查系统运行的速度,以便能够跟上在现代机械中制造诸如香烟的物体的非常高的速率(例如,每分钟约10,000支香烟 )。 使用能够检测非常小的缺陷并且还可以补偿在圆周方向上物体的可能的不均匀照明的技术来分析图像。